Exposure
- ID
- GRAVI.2023-08-03T00:58:28.017_2
- Header ID
- GRAVI.2023-08-03T00:58:28.017
- Date updated
- 2023-08-03 01:15:30 UTC+0000
- Release date
- 2024-08-03 01:15:30 UTC+0000
- UTC Start
- 2023-08-03 00:58:28.017
- UTC End
- 2023-08-03 01:04:28.017
- MJD Start
- 60159.04060205
- MJD End
- 60159.04476871667
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0049
- Ambient temperature (°C)
- 18.65
- Seeing (arcsec)
- 0.685
Observation
- ID
- 56474
- Category
- science
- Program ID
- 111.24H1.004
- Program Title
- THE GALACTIC CENTER WITH GRAVITY - PROBING EVENT HORIZON SCALE PHYSICS WITH STARS AND FLARES
- Program Type
- GTO
- PI / COI
- EISENHAUER/ GILLESSEN/ GENZEL/ OTT/ STRAUBMEIER/ BRANDNER/ ROUSSELET-PERRAUT/ PERRIN/ GARCIA/ ECKART/ DE ZEEUW/ WIDMANN/ PAUMARD/ HORROBIN/ VINCENT/ DRESCHER/ BOURDAROT/ CAO/ LUTZ/ STURM/ RIBEIRO
Target
- ID
- 41849
- Name
- IRS16C
- RA
- 266.4171083333333
- DEC
- -29.007645
Instrument
- Interferometer
- VLTI
- Instrument
- GRAVITY_FT
- Instrument mode
- LOW
- Instrument sub-mode
- DUAL
- Stations
- U1 U2 U3 U4
Projected baselines
| Baseline | Length start | Length end | Angle start | Angle end |
|---|---|---|---|---|
| U1-U2 | 56.5600 | 56.5570 | 20.9000 | 21.7000 |
| U1-U3 | 102.4130 | 102.4300 | 27.2000 | 28.0000 |
| U1-U4 | 129.4660 | 129.7230 | 54.8330 | 55.7000 |
| U2-U3 | 46.5920 | 46.6180 | 34.7000 | 35.6000 |
| U2-U4 | 88.3400 | 88.6500 | 75.7510 | 76.5890 |
| U3-U4 | 61.3490 | 61.6130 | 105.6480 | 106.3660 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 111.24H1.004 |
| HIERARCH ESO DPR CATG | SCIENCE |
| HIERARCH ESO DPR TYPE | OBJECT,DUAL |
| MJD-OBS | 60159.04060205 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | S4 |
| RA | 266.41687 |
| DEC | -29.00725 |
| HIERARCH ESO INS SPEC RES | LOW |
| HIERARCH ESO INS POLA MODE | SPLIT |
| HIERARCH ESO ISS CONF NTEL | 4 |
| HIERARCH ESO ISS CONF STATION1 | U1 |
| HIERARCH ESO ISS CONF STATION2 | U2 |
| HIERARCH ESO ISS CONF STATION3 | U3 |
| HIERARCH ESO ISS CONF STATION4 | U4 |
| EXPTIME | 389.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 30.0 |
| HIERARCH ESO DET2 NDIT | 12 |
| HIERARCH ESO ISS PBL12 START | 56.56 |
| HIERARCH ESO ISS PBL12 END | 56.557 |
| HIERARCH ESO ISS PBLA12 START | 20.9 |
| HIERARCH ESO ISS PBLA12 END | 21.7 |
| HIERARCH ESO ISS PBL13 START | 102.413 |
| HIERARCH ESO ISS PBL13 END | 102.43 |
| HIERARCH ESO ISS PBLA13 START | 27.2 |
| HIERARCH ESO ISS PBLA13 END | 28.0 |
| HIERARCH ESO ISS PBL14 START | 129.466 |
| HIERARCH ESO ISS PBL14 END | 129.723 |
| HIERARCH ESO ISS PBLA14 START | 54.833 |
| HIERARCH ESO ISS PBLA14 END | 55.7 |
| HIERARCH ESO ISS PBL23 START | 46.592 |
| HIERARCH ESO ISS PBL23 END | 46.618 |
| HIERARCH ESO ISS PBLA23 START | 34.7 |
| HIERARCH ESO ISS PBLA23 END | 35.6 |
| HIERARCH ESO ISS PBL24 START | 88.34 |
| HIERARCH ESO ISS PBL24 END | 88.65 |
| HIERARCH ESO ISS PBLA24 START | 75.751 |
| HIERARCH ESO ISS PBLA24 END | 76.589 |
| HIERARCH ESO ISS PBL34 START | 61.349 |
| HIERARCH ESO ISS PBL34 END | 61.613 |
| HIERARCH ESO ISS PBLA34 START | 105.648 |
| HIERARCH ESO ISS PBLA34 END | 106.366 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.004828 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.004972 |
| HIERARCH ESO ISS AMBI TEMP | 18.65 |
| HIERARCH ESO ISS AMBI FWHM START | 0.65 |
| HIERARCH ESO ISS AMBI FWHM END | 0.72 |
| HIERARCH ESO FT ROBJ NAME | IRS16C |
| HIERARCH ESO FT ROBJ ALPHA | 174540.1060 |
| HIERARCH ESO FT ROBJ DELTA | -290027.5220 |